Restrictions have recently tightened further because of new variants.

由于病毒出现了新变体，限制最近进一步收紧。

New variants or strains of COVID-19 are appearing around the world, as it mutates like other viruses do and one big question being asked is, will existing vaccines protect people against the new versions of coronavirus?

全球范围内正在不断出现新冠病毒新变体或毒株，当它像其他病毒一样变异时，一个很严重问题是，现有疫苗能否保护人们免受新冠病毒变种毒株感染呢？

They've released almost 700 new plant variations since 1927.

自1927年以来，他们布了近七百个新植物变体。

Just 15% of people in the U.S. ages 5 and older have gotten a bivalent booster, according to the CDC, which means many people are currently not as protected as they could be against the new variant.

根据美国病控制与预防中心数据，在美国5岁及以上人群中，有15%人接种了二价疫苗，这意味着许多人目前对这种新变体保护程度没有达到应有水平。

A US scientist says vaccinations and precautions can help stop the rise of new COVID-19 cases driven by new variants.

一名美国科学家表示，接种疫苗和预防措施可以帮助阻止新冠肺炎新变体病例增长。

There is growing concern in the U. S. over a spike in COVID-19 infections tied to a new Omicron variant.

在美国，人们对与新奥密克戎变体有关新冠病毒感染病例激增关注加大。

Russia says it's started developing a new version of the Sputnik vaccine adapted to the new COVID-19 Omicron variant.

俄罗斯表示，开始开一种适应新冠病毒新变体 Omicron 新版 Sputnik 疫苗。

COVID-19 hospital admission and death rates are going up, and new omicron variants are being blamed.

新冠肺炎入院率和死亡率都在上升，新奥密克戎变体被认为是始作俑者。

The World Health Organization is seeking a global treaty between nations on responding to pandemics amid growing concerns over the new COVID-19 Omicron.

在人们对新冠病毒新变体 Omicron 越来越关注情况下，世界卫生组织正在寻求在各国之间达成一项应对疫情全球条约。

The WHO chief was speaking at the start of a three-day special session of the World Health Assembly on Monday amid growing concerns over the new Omicron coronavirus variant.

世卫组织负责人在周一举行为期三天世界卫生大会特别会议开始时表讲话，当时人们对新变体 Omicron 担忧越来越大。

You know, I think it's interesting that the variant, at least for me, it's definitely caught me off guard, every time there is a new variant, you know, Omicron, Delta, Alpha, all the ones you've mentioned.

你知道，我认为这个变体很有趣， 至少对我来说，它肯定让我措手不及， 每次有一个新变体， 你知道，Omicron、Delta、Alpha，所有你提到。

The reality is most new variants, these things that lawyers are so damn special that they're needed to resolve those, they're just rest areas, and they haven't realized that the rest areas are not exit ramps.

现实是，大多数新出现变体——那些律师们自认为非常特殊、非他们不可解决问题——其实是休息区，而他们还没意识到，这些休息区并不是出口匝道。

He would often add or delete one of those elements to create a new word, or a new variation of an existing word.

他常常会添加或删除其中一个元素，以创造一个新词，或是一个现有词汇新变体。

And, at the same time, if you think about production, each time a company creates a new variation of a product, production costs go up.

而且， 与此同时， 如果您考虑生产，每次公司创建产品新变体时，生产成本都会上升。

And as I noted, a new variation was added to the list in the early 1600s when the word run appeared to refer to the same type of stream.

正如我所提到，在17世纪初，当“run”一词出现以指代同类型溪流时，这份清单上又增添了一个新变体。